Water trap and seal.



No. 880,975. I PATENTED MAR. 3, 1908. E. A. & F. M. CONRAD.

WATER TRAP AND SEAL.

APPLICATION FILED DEG. 31,1906.

WITNESSES. lNVf/VTORS z, [dwardflCbn rad Franz M Con rad Jdaao I B vATTORNEY 1 1w: NORRIS PETERS c0), WASHINGTON,'D. c.

UNITED STATES PATENT OFFICE.

EDWARD A. CONRAD AND FRANK M. CONRAD, OF ELIZABETH, NEW JERSEY.

WATER TRAP AND SEAL.

Specification of Letters Patent.

Patented March 3, 1908.

Application filed December 31, 1906. Serial No. 350,297.

To all whom it may concern:

Be it known that we, EDWARD A. CONRAD and FRANK M. CONRAD, citizens ofthe United States of America, and residing at Elizabeth, in the countyof Union and State of New Jersey, have invented certain new and usefulImprovements in WaterTraps and Seals, of which the following is aspecification, such as will enable those skilled in the art to which itappertains to make and use the same.

This invention relates to back water traps for use in connection withhouse plumbing, such as sewer tra s, cellar drains and the like and theobject t ereof is to provide such a trap which prevents water which hasonce passed therethrough from returning into the pipe from which itcame; a further object being to provide a trap of this character whichis also an effectual seal, thereby preventing gases from passingtherethrough and into the building in which it is located; a furtherobject being to provide such a device wherein the parts are accessibleand interchangeable and which is very simple in construction, easy toplace in position, absolutely effectual and comparatively inexpensive.

Our invention is fully described in the following specification, ofwhich the accompanying drawings form a part, in which the separate partsare designated by suitable reference characters in each of the views,and in which Figure 1 is a sectional view of an ordinary trap with ourinvention in position in the drain pipe; Fig. 2 is a sectional viewtaken on the line 22 of Fig. 1; and Fig. 3 is a sectional view taken onthe line 33 of Fig. 1.

In the drawings forming a part of this application we have shown anordinary trap a provided with a house drain pipe I), a cellar drain pipe0 and the sewer outlet a and in the drawing we also show another pipe (1which may or may not be employed but which may also be provided with ourinvention if desired.

In the drain pipe I) we have shown our invention ready for use and inposition for preventing back water and also for preventing the passageof gases therethrough, said invention consisting of an inclined collar fcalked into the trap a and the drain pipe I) is also calked or otherwisesecured to the said collar, hermetically Connected with the collar f, bymeans of a screw-thread f is a perforated plate h to which is secured adependent tube 7%, the

bottom of which is flared outwardly as shown and provided with. arms 7vupon which is mounted, by means of an ordinary bayonet joint, a cup t inwhich is loosely placed a spherical float 7c which is adapted to closethe flared end of the tube b when in use and it will be seen that thetop of the cup L projects a considerable distance beyond the bottom ofthe tube W.

In practice, the water from the pipe 1) passes through the plate h andtube It into the cup t and thence into the trap a and to the sewer andthe float 7c is raised by the water in the cup c' finding a seat in theflared end of the tube 7L2 thereby preventing the water passing into thesaid tube and also effectually preventing the passage of gases from thesewer thereinto, not alone because of the float, however, but alsobecause of the Water in the cup i which completely closes the mouth ofthe tube 72 thereby forming a water seal for the pipe I).

It will be observed that the float does not prevent the outward passageof the water.

from the pipe I) and ready access to the cup 'i is possible, either forsubstitution or repair and various changes in and modifications of theconstruction shown and described may be made, within the scope of thefollowing claims, without departing from the spirit of our invention orsacrificing its advantages.

Having fully described our invention, what we claim as new and desire tosecure by Letters Patent, is

In a trap, a collar secured in the drain pipe flange and in said drainpipe, a passage through said collar, a cup detachably mount ed upon saidpassage and a float in said cup, normally above the level of water insaid trap and preventing communication between said trap and said drainpipe. 1

In testimony that we claim the foregoing as our invention we have signedour names in presence of the subscribing witnesses this 28th day ofDecember 1906.

EDWARD A. CONRAD. FRANK M. CONRAD.

Witnesses:

A. J. MONLAW, M. M. WHIPPLE.

